import java.util.Scanner;
public class MyDCTest {
    public static void main (String[] args) {
        String expression, again;
        int result;
        try
        {
            Scanner in = new Scanner(System.in);
            do
            {
                MyDC evaluator = new MyDC();
                System.out.println ("Enter a valid postfix expression: ");
                expression = in.nextLine();
                result = evaluator.evaluate (expression);
                System.out.println();
                System.out.println ("That expression equals " + result);
                System.out.print ("Evaluate another expression [Y/N]? ");
                again = in.nextLine();
                System.out.println();
            }
            while (again.equalsIgnoreCase("y"));
        }
        catch (Exception IOException)//20175332
        {
            System.out.println("Input exception reported");
        }
    }
}